Coming tomorrow:A review of Laurie Halse Anderson’s Chains, a finalist for the 2008 National Book Award for Young People’s Literature, which involves a 13-year-old slave who lives in New York during the Revolutionary War and devises a dangerous plan to escape from her cruel Loyalist owners. The review is the latest in the “Countdown to the Caldecott and Newbery Medals” series on this site, which looks at possible candidates for the American Library Association prizes to be handed out on Jan. 26.